For better quality and cost control, now Liguanda has its own professional alum alloy house. We keep all pivotal procedure done in-house. This includes alum alloy making, deep stretching, metal pressing, mechanical polishing, wrapper spraying, non-stick coating, anodizing, product development, tooling, final assembly, etc. We accredited for ISO9001:2000 certification and our products have GS,UL,CB,CE approved and RoHS/REACH compliance. The patents resulting from our technological breakthroughs bear witness to our outstanding achievement & commitment in being a leading player in the industry. In Hengsheng, quality is focused in our company and we are confident to be your agreeable partner today and future.Less